Fuse monitor

Fuse monitor

When an appliance ceases to —K operate, there may be various causes for this, one of which is the blowing of the mains fuse. The monitor proposed here contains an LED that lights when that is the case. It is suitable for use with fuses rated from milliamperes to amperes. As long as the fuse[…]

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Best-Electronics

Electronic Reversing Circuit for Model Rains

Many model train enthusiastic UV find the mechanical reversing system for trains in the HO series from Marklin and other manufacturers primitive and unreliable. The system is based on a.c. motors and a mechanical reversing assembly operated by a small electromagnet. The motor speed is determined by the track voltage, which can lie between 4[…]

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Voltage Inverter

Voltage Inverter

A negative supply voltage may be obtained with the use of a special inverter IC. but such ICs are not always readily available. Fortunately. if the current drawn is not excessive, a standard HC-MOS chip may be used. The present circuit is based on Type 74HC14, which contains six Schmitt triggers, whose combined gates can[…]

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TDA7293 : High Power 120V/100W Amplifier Circuit Diagram

TDA7293 is an integrated monolithic Multiwatt15 package designed for audio amplifying purpose. It is being used in hi-fi application fields like self-powered audio speakers, stereo system, top-class TV. Having a high input voltage and high output current range it is capable of supplying highest power with both of 4-Ω and 8-Ω loads. The inbuilt muting[…]

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